代码截图工具 ( Java Swing )

package idv.wuyou.code.to.image; import java.util.ArrayList; import java.util.List; /** * * @author na.shi.wu.you */ abstract class CodeTokenizer { static List<String> tokenize(String code) { List<String> result = new ArrayList<String>(); tokenize(code, result); return result; } static void tokenize(String code, List<String> buffer) { Ver02.instance.tokenizeUtil(code, buffer); } private CodeTokenizer() {} abstract void tokenizeUtil(String code, List<String> buffer); /*^*************************************************************************** * Version 01 ****************************************************************************/ private static class Ver01 extends CodeTokenizer { private static final Ver01 instance = new Ver01(); private static final String DILIMS = " =;,(){}[].\n"; @Override void tokenizeUtil(String code, List<String> buffer) { boolean isDilim = false; StringBuilder builder = new StringBuilder(); for(int i = 0; i < code.length(); i++) { char c = code.charAt(i); boolean isCurrentDilim = DILIMS.indexOf(c) >= 0; if( isCurrentDilim != isDilim ) { isDilim = !isDilim; if( builder.length() > 0 ) buffer.add(builder.toString()); builder.delete(0, builder.length()); } builder.append(c); } if( builder.length() > 0 ) buffer.add(builder.toString()); } } /*^*************************************************************************** * Version 02 ****************************************************************************/ private static class Ver02 extends CodeTokenizer { private static enum Mode { MultiComment, SingleComment, String, Annotate, Delim, Default, ; } private static final Ver02 instance = new Ver02(); private static final String DILIMS = " =;,(){}[].\'\n"; @Override void tokenizeUtil(String code, List<String> buffer) { StringBuilder builder = new StringBuilder(); int len = code.length(); Mode mode = Mode.Default; for(int i=0; i<len; i++) { switch( mode ) { case MultiComment : mode = inMultiComment(code, i, builder, buffer); break; case SingleComment : mode = inSingleComment(code, i, builder, buffer); break; case String : mode = inString(code, i, builder, buffer); break; case Annotate : mode = inAnnotate(code, i, builder, buffer); break; case Delim : mode = inDelim(code, i, builder, buffer); break; default : mode = inDefault(code, i, builder, buffer); break; } } clear(builder, buffer); } private Mode inMultiComment(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); char prev = index == 0 ? 0 : code.charAt(index-1); builder.append(curr); if( curr == '/' && prev == '*' ) { clear(builder, buffer); return Mode.Default; } else { return Mode.MultiComment; } } private Mode inSingleComment(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); builder.append(curr); if( curr == '\n' ) { clear(builder, buffer); return Mode.Default; } else { return Mode.SingleComment; } } private Mode inString(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); char prev = index == 0 ? 0 : code.charAt(index-1); builder.append(curr); if( curr == '"' && prev != '\\' ) { clear(builder, buffer); return Mode.Default; } else { return Mode.String; } } private Mode inAnnotate(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); if( curr == '(' || curr == ' ' || curr == '\n' ) { clear(builder, buffer); builder.append(curr); return Mode.Delim; } else { builder.append(curr); return Mode.Annotate; } } private Mode inDelim(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); char prev = index == 0 ? 0 : code.charAt(index-1); char next = index == code.length()-1 ? 0 : code.charAt(index+1); if( curr == '/' && next == '/' ) { clear(builder, buffer); builder.append(curr); return Mode.SingleComment; } else if( curr == '/' && next == '*' ) { clear(builder, buffer); builder.append(curr); return Mode.MultiComment; } else if( curr == '"' && prev != '\\' && prev != '\'' ) { clear(builder, buffer); builder.append(curr); return Mode.String; } else if( curr == '@' ) { clear(builder, buffer); builder.append(curr); return Mode.Annotate; } else if( DILIMS.indexOf(curr) >= 0 ) { builder.append(curr); return Mode.Delim; } else { clear(builder, buffer); builder.append(curr); return Mode.Default; } } private Mode inDefault(String code, int index, StringBuilder builder, List<String> buffer) { char curr = code.charAt(index); char prev = index == 0 ? 0 : code.charAt(index - 1); char next = index == code.length() - 1 ? 0 : code.charAt(index + 1); if( curr == '/' && next == '/' ) { clear(builder, buffer); builder.append(curr); return Mode.SingleComment; } else if( curr == '/' && next == '*' ) { clear(builder, buffer); builder.append(curr); return Mode.MultiComment; } else if( curr == '"' && prev != '\\' && prev != '\'' ) { clear(builder, buffer); builder.append(curr); return Mode.String; } else if( curr == '@' ) { clear(builder, buffer); builder.append(curr); return Mode.Annotate; } else if( DILIMS.indexOf(curr) < 0 ) { builder.append(curr); return Mode.Default; } else { clear(builder, buffer); builder.append(curr); return Mode.Delim; } } private void clear(StringBuilder builder, List<String> buffer) { if( builder.length() > 0 ) { buffer.add(builder.toString()); builder.delete(0, builder.length()); } } } }